Hey there,
A website like "justdial" and "houzz" is not a bad idea but to build it more powerful in contents we would like to know more about it so it will be great if you could come over the chat to discuss it further.
We are an agency here in London with more than 8 years of experience in the field.
Looking forward to hearing from you to discuss further on the budget and the timeline.
Regards,
E.G LTD.